Alleles carry the codes for producing which of these types of large molecules? *
1 point
a. lipids
b. proteins
c. nucleic acids
d. carbohydrates

Which of these choices is the definition of allele? *
1 point
A. the form of a gene that is expressed
B. one of the alternative forms of a gene
C. the combination of genes for a specific trait
D. the complete genetic makeup of a living thing

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation

Which best example best demonstrates the importance of having knowledge of evolutionary relationships? a. illustration of a plant b.organ transplantation between species c. blood donation from a human d. do you need sequence of an insect.

When does a spring tide occur? question 9 options: they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur twice a year in the spring and fall. they occur on the date of the vernal equinox each year, no matter what stage the moon is in. this is why they are called spring tides. they occur when the sun, moon, and earth are at 45-degree angles from each other. this happens once every spring. they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur all year long.